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Support transparency and masks under macOS / Cairo

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This commit is contained in:
Stefan Csomor
2017-06-26 09:49:39 +02:00
parent 526889dc57
commit 4cce63d904
1 changed files with 7 additions and 2 deletions
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9
src/generic/graphicc.cpp
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@@ -1445,7 +1445,7 @@ wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitm
isSrcBpp32
#elif defined(__WXGTK3__)
isSrcBpp32 || bmp.GetMask() != NULL
#elif defined(__WXMSW__)
#elif defined(__WXMSW__) || defined(__WXOSX__)
(isSrcBpp32 && bmp.HasAlpha()) || bmp.GetMask() != NULL
#else
isSrcBpp32
@@ -1538,7 +1538,7 @@ wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitm
}
}
#if defined(__WXMSW__) || defined(__WXGTK3__)
#if defined(__WXMSW__) || defined(__WXGTK3__) || defined(__WXOSX__)
// if there is a mask, set the alpha bytes in the target buffer to
// fully transparent or fully opaque
#if defined(__WXMSW__)
@@ -1559,7 +1559,12 @@ wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitm
wxUint32* const rowStartDst = data;
for (int x=0; x < pixData.GetWidth(); x++)
{
// contrary to the others OSX has natively its masked out pixels as white
#ifdef __WXOSX__
if (p.Red() == 0xFF && p.Green() == 0xFF && p.Blue() == 0xFF )
#else
if (p.Red()+p.Green()+p.Blue() == 0)
#endif
*data = 0;
else
*data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);